Improvement in stone-sawing machines



w; TUGGES C. Stone-Sawing Machine.

- No. 203,219. Patnted April 30,1878.

ATTORNEYS.

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UNITED STATESPATENT OFFICE.

WILLIAM TUGGEY, OF WEST RUTLAND, VERMONT.

IMPROVEMENT IN STO NE-SAWING MACHINES.

Specification forming part of Letters Patent N 0. 203,219, dated April30, 1878; application filed June 27, 1877.

To all whom it may. concern:

Be it known that I, WILLIAM TUGGEY, of West Rutland, in the county ofRutland and State of Vermont, have invented an improved method foroperating certain devices in the invention patented to L. B. Clogstonfor sawing marble, which patent bears date August 25, 1874, whichimprovement is fully set forth in the following specification, referencebeing had to the accompanying drawings.

My invention is an improvement upon the marble-sawin g machine for whichLetters Patent No. 154,320 have been granted to L. B. Ologston.

In the accompanying drawing, Figure 1 is an end elevation, showing suchparts of the Glogston machine as are required to enable my improvementto be readily understood. Fig. 2 is a similar view of said machine withmy improvement attached. Fig. 3 is a plan view of a fragment of themachine, showing the application of my improvement. Fig. 4 is a detailview.

In Glogstons machine, A, Fig. 1, indicates the saws of a gang suspendedby rods B from bars 0, which have metallic housings or guides D, thatslide on the vertical rods E attached to frame F. G G are griperspivoted to the barsO and embracing the rods E in such a manner that theybite thereon, and prevent said bars from rising or being thrown upward(Not shown.) The elbow-levers H, which are pivoted to the bars 0contiguous to the gripers, serve to raise the free ends of the latter,and thus relieve the bite on the rods E, and allow the bars 0 andsaw-gan g A to be raised. These levers H are operated by rods I andseparate levers K, which latter are pivoted, one on each end of themachine. My invention consists in combining with such levers and rods anapparatus for operating the four gripers simultaneously, as hereinafterdescribed.

My invention is illustrated in Figs. 2, 3, 4, in which the primedletters A to H, inclusive, indicate the same parts as the correspondingunprimed letters in Fig. 1.

The devices which I employ consist of the horizontal rock-shaft L,having arms M, and a hand-lever, N, rigidly connected thereto; also rods0, which connect said arms M with the levers K that operate the gripersG G. The said rock-shaft is mounted in suitable bearings attached to theside of frame F, and the arms M and lever N project in oppositedirections from the shaft. The normal position of the parts is shown infull lines, Figs. 2, 3, in which the lever N is inclined outward fromthe frame F, and the gripers G are lowered so as to bite the guide-rodsE. By seizing the free end of the lever N and pressing it inward tillthe lever assumes the position shown in dotted lines, Fig. 2, thediagonal central 1evers K will be correspondingly reversed in position,and the gripers G raised, as shown in dotted lines, Fig. 4, and therebycaused to simultaneously release their bite on the guiderods E. Suchrelease allows the bars 0 and the connected gang of saws A to be raised,to enable the saws to begin a new out.

It is obvious that, by throwing the lever back to its former position,the gripers will fall by gravity and bite the guide-rods, as before.

By means of my improvement, therefore, I am enabled to operate all thegripers simultaneously by a single movement of a lever, L, which islocated at the side of the machine in the most easily accessibleposition. The labor and time required to saw a given quantity of stoneis thereby greatly lessened, and the cost of the operationcorrespondingly diminished.

I am well aware of the employment of a rockshaft and lever for operatingvarious. devices.

What I claim is The combination of the rock-shaft L, hung horizontallyat the side of the machine, and the radial lever N, arms M M, andconnectingrods O O, with lever K, rods 1, elbowlevers H, pivoted gripersG, and bars 0, housings D, and guide-rods E, all constructed andarranged as shown and described, to operate as specified. Y

WILLIAM TUGGEY.

Witnesses:

WAYNE BAILEY, J. B. SMITH.

